/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:29,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:29,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:29,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:29,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:29,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:29,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:29,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:29,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:29,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:29,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:29,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:29,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:29,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:29,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:29,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:29,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:29,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:29,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:29,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:29,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:29,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:29,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:29,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:29,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:29,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:29,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:29,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:29,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:29,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:29,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:29,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:29,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:29,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:29,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:29,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:29,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:29,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:29,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:29,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:29,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:29,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:30:29,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:29,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:29,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:29,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:29,365 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:29,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:29,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:29,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:29,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:29,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:29,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:29,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:29,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:29,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:29,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:29,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:29,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:29,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:29,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:29,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:29,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:29,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:29,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:29,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:29,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:29,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:29,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:29,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:29,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:29,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:29,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:29,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:29,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:29,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:29,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:29,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-24 19:30:29,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd6c6982/2d451f6ffa3441a39ee55468cf12d2f8/FLAG859f58e01 [2020-09-24 19:30:30,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:30,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-24 19:30:30,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd6c6982/2d451f6ffa3441a39ee55468cf12d2f8/FLAG859f58e01 [2020-09-24 19:30:30,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd6c6982/2d451f6ffa3441a39ee55468cf12d2f8 [2020-09-24 19:30:30,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:30,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:30,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:30,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:30,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:30,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:30" (1/1) ... [2020-09-24 19:30:30,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:30, skipping insertion in model container [2020-09-24 19:30:30,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:30" (1/1) ... [2020-09-24 19:30:30,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:30,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:31,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:31,377 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:31,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:31,624 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:31,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31 WrapperNode [2020-09-24 19:30:31,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:31,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:31,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:31,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:31,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... [2020-09-24 19:30:31,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:31,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:31,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:31,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:31,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:33,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:33,451 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:33,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:33 BoogieIcfgContainer [2020-09-24 19:30:33,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:33,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:33,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:33,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:33,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:30" (1/3) ... [2020-09-24 19:30:33,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:33, skipping insertion in model container [2020-09-24 19:30:33,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:31" (2/3) ... [2020-09-24 19:30:33,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:33, skipping insertion in model container [2020-09-24 19:30:33,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:33" (3/3) ... [2020-09-24 19:30:33,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-24 19:30:33,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:33,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:33,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:33,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:33,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:33,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:33,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:33,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:33,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:33,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:33,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 19:30:33,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:33,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:33,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-24 19:30:33,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:33,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615463834] [2020-09-24 19:30:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:34,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:30:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-24 19:30:34,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:30:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:34,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:30:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:34,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615463834] [2020-09-24 19:30:34,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:34,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:30:34,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803689195] [2020-09-24 19:30:34,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:34,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:34,629 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 19:30:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:38,192 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-24 19:30:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:30:38,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-24 19:30:38,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:38,225 INFO L225 Difference]: With dead ends: 1766 [2020-09-24 19:30:38,226 INFO L226 Difference]: Without dead ends: 1025 [2020-09-24 19:30:38,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-24 19:30:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-24 19:30:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-24 19:30:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-24 19:30:38,368 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-24 19:30:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:38,368 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-24 19:30:38,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-24 19:30:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 19:30:38,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:38,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:38,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:38,379 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:38,380 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-24 19:30:38,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:38,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60140135] [2020-09-24 19:30:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 19:30:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:30:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:30:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:39,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:30:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:39,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:30:39,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 19:30:39,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:39,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:30:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:30:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:39,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60140135] [2020-09-24 19:30:39,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:39,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:30:39,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267048435] [2020-09-24 19:30:39,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:39,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:39,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:39,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:39,942 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 7 states. [2020-09-24 19:30:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:42,540 INFO L93 Difference]: Finished difference Result 2304 states and 3232 transitions. [2020-09-24 19:30:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:42,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-24 19:30:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:42,556 INFO L225 Difference]: With dead ends: 2304 [2020-09-24 19:30:42,557 INFO L226 Difference]: Without dead ends: 1324 [2020-09-24 19:30:42,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-09-24 19:30:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1025. [2020-09-24 19:30:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-24 19:30:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1320 transitions. [2020-09-24 19:30:42,646 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1320 transitions. Word has length 137 [2020-09-24 19:30:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:42,647 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1320 transitions. [2020-09-24 19:30:42,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1320 transitions. [2020-09-24 19:30:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 19:30:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:42,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:42,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:42,656 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1168639507, now seen corresponding path program 1 times [2020-09-24 19:30:42,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:42,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835773856] [2020-09-24 19:30:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 19:30:43,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:30:43,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:30:43,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:30:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:43,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:43,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:43,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:43,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:43,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:30:43,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:43,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:44,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:30:44,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-24 19:30:44,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:44,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:30:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:44,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835773856] [2020-09-24 19:30:44,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:44,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:44,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683128620] [2020-09-24 19:30:44,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:44,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:44,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:44,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:44,219 INFO L87 Difference]: Start difference. First operand 1025 states and 1320 transitions. Second operand 7 states. [2020-09-24 19:30:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:47,440 INFO L93 Difference]: Finished difference Result 2282 states and 3011 transitions. [2020-09-24 19:30:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:47,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-24 19:30:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:47,449 INFO L225 Difference]: With dead ends: 2282 [2020-09-24 19:30:47,449 INFO L226 Difference]: Without dead ends: 1272 [2020-09-24 19:30:47,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-24 19:30:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1232. [2020-09-24 19:30:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-09-24 19:30:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1541 transitions. [2020-09-24 19:30:47,485 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1541 transitions. Word has length 216 [2020-09-24 19:30:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:47,486 INFO L479 AbstractCegarLoop]: Abstraction has 1232 states and 1541 transitions. [2020-09-24 19:30:47,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:47,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1541 transitions. [2020-09-24 19:30:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 19:30:47,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:47,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:47,492 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1435154775, now seen corresponding path program 1 times [2020-09-24 19:30:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424460179] [2020-09-24 19:30:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:48,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 19:30:48,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:30:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-24 19:30:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:30:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:48,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:48,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:48,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:48,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:30:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:30:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-24 19:30:49,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:30:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:49,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424460179] [2020-09-24 19:30:49,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:49,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:30:49,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056493613] [2020-09-24 19:30:49,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:30:49,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:49,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:30:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:30:49,321 INFO L87 Difference]: Start difference. First operand 1232 states and 1541 transitions. Second operand 9 states. [2020-09-24 19:30:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:53,389 INFO L93 Difference]: Finished difference Result 2682 states and 3325 transitions. [2020-09-24 19:30:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:30:53,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-24 19:30:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:53,396 INFO L225 Difference]: With dead ends: 2682 [2020-09-24 19:30:53,396 INFO L226 Difference]: Without dead ends: 972 [2020-09-24 19:30:53,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:30:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-24 19:30:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 934. [2020-09-24 19:30:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-09-24 19:30:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1046 transitions. [2020-09-24 19:30:53,429 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1046 transitions. Word has length 226 [2020-09-24 19:30:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:53,429 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1046 transitions. [2020-09-24 19:30:53,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:30:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1046 transitions. [2020-09-24 19:30:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-24 19:30:53,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:53,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:53,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:53,435 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash 678371119, now seen corresponding path program 1 times [2020-09-24 19:30:53,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:53,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4351753] [2020-09-24 19:30:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-09-24 19:30:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-24 19:30:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-09-24 19:30:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 19:30:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:54,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:54,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:54,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:30:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 19:30:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 19:30:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:54,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 19:30:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:55,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:55,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:30:55,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:55,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:30:55,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:55,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:30:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:55,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4351753] [2020-09-24 19:30:55,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:55,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:55,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894399821] [2020-09-24 19:30:55,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:55,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:55,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:55,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:55,435 INFO L87 Difference]: Start difference. First operand 934 states and 1046 transitions. Second operand 7 states. [2020-09-24 19:30:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:57,503 INFO L93 Difference]: Finished difference Result 2546 states and 2982 transitions. [2020-09-24 19:30:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:57,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-09-24 19:30:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:57,514 INFO L225 Difference]: With dead ends: 2546 [2020-09-24 19:30:57,515 INFO L226 Difference]: Without dead ends: 1627 [2020-09-24 19:30:57,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-09-24 19:30:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1513. [2020-09-24 19:30:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2020-09-24 19:30:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1680 transitions. [2020-09-24 19:30:57,569 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1680 transitions. Word has length 326 [2020-09-24 19:30:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:57,569 INFO L479 AbstractCegarLoop]: Abstraction has 1513 states and 1680 transitions. [2020-09-24 19:30:57,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1680 transitions. [2020-09-24 19:30:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-24 19:30:57,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:57,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:57,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:57,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash -289475798, now seen corresponding path program 1 times [2020-09-24 19:30:57,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:57,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492840160] [2020-09-24 19:30:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-09-24 19:30:58,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:58,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:30:58,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:58,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-24 19:30:58,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:59,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:30:59,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 19:30:59,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:59,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:30:59,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 19:30:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:59,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:30:59,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:30:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:30:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 74 proven. 87 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:30:59,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492840160] [2020-09-24 19:30:59,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:59,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:59,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774327400] [2020-09-24 19:30:59,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:59,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:59,634 INFO L87 Difference]: Start difference. First operand 1513 states and 1680 transitions. Second operand 7 states. [2020-09-24 19:31:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:01,520 INFO L93 Difference]: Finished difference Result 3444 states and 3879 transitions. [2020-09-24 19:31:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:01,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-09-24 19:31:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:01,533 INFO L225 Difference]: With dead ends: 3444 [2020-09-24 19:31:01,534 INFO L226 Difference]: Without dead ends: 1946 [2020-09-24 19:31:01,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2020-09-24 19:31:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1903. [2020-09-24 19:31:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2020-09-24 19:31:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2111 transitions. [2020-09-24 19:31:01,589 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2111 transitions. Word has length 344 [2020-09-24 19:31:01,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:01,589 INFO L479 AbstractCegarLoop]: Abstraction has 1903 states and 2111 transitions. [2020-09-24 19:31:01,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2111 transitions. [2020-09-24 19:31:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-09-24 19:31:01,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:01,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:01,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:01,600 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1566461733, now seen corresponding path program 1 times [2020-09-24 19:31:01,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:01,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188538502] [2020-09-24 19:31:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-09-24 19:31:02,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:02,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:31:02,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:02,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:02,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:31:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 19:31:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:03,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:03,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-24 19:31:03,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:03,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:03,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-24 19:31:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:31:03,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:31:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:31:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 91 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-09-24 19:31:03,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188538502] [2020-09-24 19:31:03,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:03,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:03,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696583781] [2020-09-24 19:31:03,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:03,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:03,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:03,941 INFO L87 Difference]: Start difference. First operand 1903 states and 2111 transitions. Second operand 7 states. [2020-09-24 19:31:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:05,954 INFO L93 Difference]: Finished difference Result 4593 states and 5207 transitions. [2020-09-24 19:31:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:05,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-09-24 19:31:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:05,967 INFO L225 Difference]: With dead ends: 4593 [2020-09-24 19:31:05,967 INFO L226 Difference]: Without dead ends: 2705 [2020-09-24 19:31:05,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2020-09-24 19:31:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2665. [2020-09-24 19:31:06,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2665 states. [2020-09-24 19:31:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 2928 transitions. [2020-09-24 19:31:06,036 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 2928 transitions. Word has length 462 [2020-09-24 19:31:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:06,037 INFO L479 AbstractCegarLoop]: Abstraction has 2665 states and 2928 transitions. [2020-09-24 19:31:06,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 2928 transitions. [2020-09-24 19:31:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2020-09-24 19:31:06,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:06,051 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:06,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:06,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1291966577, now seen corresponding path program 1 times [2020-09-24 19:31:06,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:06,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361938693] [2020-09-24 19:31:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-09-24 19:31:07,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-09-24 19:31:07,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-09-24 19:31:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-24 19:31:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:07,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:07,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:07,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:07,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:31:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 19:31:07,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:31:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-09-24 19:31:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:31:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 19:31:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:31:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 424 proven. 91 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-09-24 19:31:08,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361938693] [2020-09-24 19:31:08,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:08,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:08,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063255794] [2020-09-24 19:31:08,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:08,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:08,602 INFO L87 Difference]: Start difference. First operand 2665 states and 2928 transitions. Second operand 7 states. [2020-09-24 19:31:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:10,896 INFO L93 Difference]: Finished difference Result 5767 states and 6466 transitions. [2020-09-24 19:31:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:10,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 605 [2020-09-24 19:31:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:10,911 INFO L225 Difference]: With dead ends: 5767 [2020-09-24 19:31:10,911 INFO L226 Difference]: Without dead ends: 3306 [2020-09-24 19:31:10,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2020-09-24 19:31:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3051. [2020-09-24 19:31:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2020-09-24 19:31:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 3356 transitions. [2020-09-24 19:31:10,985 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 3356 transitions. Word has length 605 [2020-09-24 19:31:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:10,986 INFO L479 AbstractCegarLoop]: Abstraction has 3051 states and 3356 transitions. [2020-09-24 19:31:10,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 3356 transitions. [2020-09-24 19:31:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2020-09-24 19:31:11,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:11,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:11,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:31:11,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:11,009 INFO L82 PathProgramCache]: Analyzing trace with hash 725916957, now seen corresponding path program 1 times [2020-09-24 19:31:11,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:11,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789787175] [2020-09-24 19:31:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:12,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 724 [2020-09-24 19:31:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:31:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-09-24 19:31:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 381 [2020-09-24 19:31:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:12,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:12,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:12,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:31:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:12,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:31:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:12,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 19:31:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:12,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:31:12,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:12,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 19:31:12,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:31:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-09-24 19:31:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:13,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 19:31:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:13,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:13,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-09-24 19:31:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:31:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:31:13,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:31:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 574 proven. 91 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-09-24 19:31:13,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789787175] [2020-09-24 19:31:13,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:13,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:13,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623263103] [2020-09-24 19:31:13,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:13,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:13,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:13,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:13,883 INFO L87 Difference]: Start difference. First operand 3051 states and 3356 transitions. Second operand 7 states. [2020-09-24 19:31:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:15,770 INFO L93 Difference]: Finished difference Result 7064 states and 7938 transitions. [2020-09-24 19:31:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:15,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 705 [2020-09-24 19:31:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:15,787 INFO L225 Difference]: With dead ends: 7064 [2020-09-24 19:31:15,788 INFO L226 Difference]: Without dead ends: 4217 [2020-09-24 19:31:15,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2020-09-24 19:31:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 4191. [2020-09-24 19:31:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4191 states. [2020-09-24 19:31:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 4637 transitions. [2020-09-24 19:31:15,875 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 4637 transitions. Word has length 705 [2020-09-24 19:31:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:15,876 INFO L479 AbstractCegarLoop]: Abstraction has 4191 states and 4637 transitions. [2020-09-24 19:31:15,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 4637 transitions. [2020-09-24 19:31:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-09-24 19:31:15,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:15,887 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:15,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:31:15,888 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:15,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1161482863, now seen corresponding path program 1 times [2020-09-24 19:31:15,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:15,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812983182] [2020-09-24 19:31:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-09-24 19:31:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-09-24 19:31:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-09-24 19:31:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-24 19:31:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:17,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:31:17,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:31:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 19:31:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:31:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 19:31:17,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 19:31:17,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-09-24 19:31:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:18,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2020-09-24 19:31:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:18,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:18,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 19:31:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 19:31:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:18,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-09-24 19:31:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:18,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 19:31:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:31:18,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:18,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:31:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 481 proven. 265 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2020-09-24 19:31:18,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812983182] [2020-09-24 19:31:18,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:18,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:18,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378008530] [2020-09-24 19:31:18,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:18,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:18,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:18,725 INFO L87 Difference]: Start difference. First operand 4191 states and 4637 transitions. Second operand 7 states.